In the past a photo ID check was never a big deal, cannot remember previous house purchases where it was. But now, "clients must have a smartphone", "customers must use the facial recognition in the app."
As neither my wife or I own a smartphone, we each have a non sentient brick, we share an email or rather she shares mine, none of that was going to float. We turned up with a driving licence each, a cursory glance and a low res photocopy was made to stick in the file.
When it comes down to it all the "must" disappears in the needs of doing business.